Battery pack



FIG. 1 is a perspective view of a battery pack showing my new design;

FIG. 2 is a left side view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a top view; and,

FIG. 7 is a bottom view thereof.

The broken lines in the drawings are for the purpose of illustrating portions of the battery pack that form no part of the claimed design. 

CLAIM The ornamental design for a battery pack, as shown and described. 